PowerWalker VFI 30000TP 3_3 BE - Manual (Page 58)

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8.2 Regular service/intervals
The UPS requires very little maintenance if installed in an appropriate environment. In order
to ensure maximum availability of the UPS, manufacturer recommends signing a proactive
service agreement with a local authorised service provider.
Batteries test 18 months
Maintenance Interval
Batteries change 3-5 years or according to battery suppliers recommendations
Cooling fan change 5 years
8.3 Cooling fan
The cooling fan lifespan of the UPS unit is about 60 000 operating hours. The actual lifespan
depends on the environment and ambient temperature.
Fan failure can be predicted by increasing noise from the fan bearings. The fan replacement
is recommended once this symptom starts appearing.
Do not use other than manufacturer’s specified spare parts.